An athlete runs 4 times around a circular running a path to describe 1760 metres. What is the angle in
radians
degrees subtended at the centre of the circle, when he had runs a distance of 308 metres?

This is a figure of a rectangular park (see figure) whose length is 30m and width is 20m. There is a path of one metre width running inside along the perimeter of the park that has to be cemented. If 1 bag of cement is required to cement 4m^2 area, how many bags of cement would be required to construct the cemented path?

A railway track running North South has two parallel rails 1.0m apart. Calculate the value of induced e.m.f. between the rails when a train passes at a speed of 90 kmh(-1) . Horizontal component of earth’s field at that place is 0.3xx1O(-4) Wbm(-2) and angle of dip is 60^@ .

A particle of mass 150 g is attached to one end of a massless inextensible string It is made to describe a vertical circle of radius 1 m When the string is making an angle of 48.2^(@) with the vertical , its instantaneous speed is 2 m//s What is the tension in the string in this position ? Would this particle be able to complte its circular path?(Take g=10 m s^(-2) ).

A cricketer fielder can throw the cricket ball with a speed v_(0) . If he throw the ball while running with speed u at an angle theta to the horizontal,find what will be time of flight.